Kapittel 6. Få bilete ut av GIMP

Kapittel 6. Få bilete ut av GIMP
	Del II. Frå novise til ekspert

Innhald

1.1. Lagra og eksportere bilete
1.2. Filformat

2.1. Det optimale forholdet mellom storleik og kvalitet
2.2. Å krympe filene litt ekstra
2.3. Lagra gjennomsiktige bilete

1. Filer

GIMP is capable of reading and writing a large variety of graphics file formats. With the exception of GIMP's native XCF file format, file handling is done by plug-ins. This makes it relatively easy to extend GIMP to support new file types when the need arises.

1.1. Lagra og eksportere bilete

	Notat
When you open an image, let's say in JPG or PNG file format, it is imported into GIMP's own XCF format, as a new project. For example, a «sunflower.png» image will be loaded as «[sunflower] (imported)-1.0 (indexed color, 1 layer)». The leading asterisk indicates that this file has been changed. This image can be saved as «sunflower.xcf» by using the Save* command. If you need your image in another format, you should use the Export command.

Notat

When you open an image, let's say in JPG or PNG file format, it is imported into GIMP's own XCF format, as a new project.

For example, a «sunflower.png» image will be loaded as «*[sunflower] (imported)-1.0 (indexed color, 1 layer)». The leading asterisk indicates that this file has been changed. This image can be saved as «sunflower.xcf» by using the Save command. If you need your image in another format, you should use the Export command.

When you are finished working with an image, you will save the results. In fact, it is often a good idea to save at intermediate stages too. GIMP is a pretty robust program, but on rare occasions crashes have happened.

GIMP's native format XCF is special. It is the only format that can store everything about an image (with the exception of «undo» information). This is the reason that saving can only be done in this format. It makes the XCF format especially suited for storing intermediate results, and for saving images to be re-opened later in GIMP.

XCF files are not readable by most other programs that display images. Once you have finished editing your image, you can export it to the format of your choice. GIMP supports a wide range of formats. Most file formats that can be imported, can also be used for exporting.

1.2. Filformat

There are several commands for saving and exporting images. They are listed in the section covering the File Menu. More information on how to use them can be found there.

I GIMP kan du eksportere bileta du lagar i mange ulike format. Det er likevel viktig å hugse på at berre GIMP sitt eige filformat (XCF) lagrar (nesten) alle opplysningane om biletet. Alle andre format tar vare på nokre opplysningar om biletet og misser andre. Det opp til deg å kjenne eigenskapane til det formatet du vel.

Når eit bilete vert eksportert, vert sjølve biletet ikkje endra. Du taper altså ingenting på eksporten. Sjå Export file.

	Notat
Når du lukker eit bilete t.d. ved å avslutta GIMP, vil du få opp ei melding dersom biletet er «ureint», dvs. at biletet er endra utan å verta lagra etterpå. Dette vert varsla med ei stjerne framfør biletnamnet. Figur 6.1. Åtvaringa ved lukking Saving an image in GIMP's native format XCF will cause the image to be considered "not dirty". On the contrary, exporting an image will not change it to "not dirty", because GIMP can't know for sure that no image information will be lost.

Notat

Når du lukker eit bilete t.d. ved å avslutta GIMP, vil du få opp ei melding dersom biletet er «ureint», dvs. at biletet er endra utan å verta lagra etterpå. Dette vert varsla med ei stjerne framfør biletnamnet.

Figur 6.1. Åtvaringa ved lukking

Saving an image in GIMP's native format XCF will cause the image to be considered "not dirty". On the contrary, exporting an image will not change it to "not dirty", because GIMP can't know for sure that no image information will be lost.